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Tourbillon (1953 Film)
In horology, a tourbillon (; " whirlwind") is an addition to the mechanics of a watch escapement to increase accuracy. Conceived by the British watchmaker and inventor John Arnold, it was developed by his friend the Swiss-French watchmaker Abraham-Louis Breguet and patented by Breguet on 26 June 1801. In a tourbillon the escapement and balance wheel are mounted in a rotating cage, with the goal of eliminating errors of poise in the balance giving a uniform weight. Tourbillons are still included in some modern wristwatches, where the mechanism is usually exposed on the watch's face to showcase it. Types of tourbillon Single axis tourbillon Patented by Breguet in 1801, the single axis tourbillon minimizes the difference in rate between positions caused by poise errors. The tourbillon was invented to complement the split bi-metallic balance which was inherently difficult to poise. In the most common implementation of this, the tourbillon carriage is carried by the fou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thomas Prescher
Thomas may refer to: People * List of people with given name Thomas * Thomas (name) * Thomas (surname) * Saint Thomas (other) * Thomas Aquinas (1225–1274) Italian Dominican friar, philosopher, and Doctor of the Church * Thomas the Apostle * Thomas (bishop of the East Angles) (fl. 640s–650s), medieval Bishop of the East Angles * Thomas (Archdeacon of Barnstaple) (fl. 1203), Archdeacon of Barnstaple * Thomas, Count of Perche (1195–1217), Count of Perche * Thomas (bishop of Finland) (1248), first known Bishop of Finland * Thomas, Earl of Mar (1330–1377), 14th-century Earl, Aberdeen, Scotland Geography Places in the United States * Thomas, Illinois * Thomas, Indiana * Thomas, Oklahoma * Thomas, Oregon * Thomas, South Dakota * Thomas, Virginia * Thomas, Washington * Thomas, West Virginia * Thomas County (other) * Thomas Township (other) Elsewhere * Thomas Glacier (Greenland) Arts, entertainment, and media * ''Thomas'' (Burton novel) 1969 nove ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Swiss Watch
Swiss made is a label or marking used to indicate that a product was made on the territory of Switzerland. It is also a geographical indication protected under different Swiss and international laws and treaties. According to the Swiss Federal Act on the Protection of Trade Marks and Indications of Source, a good or service may be designated "Swiss made" if:Federal Act on the Protection of Trade Marks and Indications of Source status as of 1 January 2017 (page visited on 17 October 2018). * For food products: 80% of the weight of the raw materials and the essential processing must take place in Switzerland. * For industrial products: 60% of the manufacturing costs and the essential manufacturing step must occur in Switzerland. * For services: the company he ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quartz Watch
Quartz is a hard, crystalline mineral composed of silica (silicon dioxide). The atoms are linked in a continuous framework of SiO4 silicon-oxygen Tetrahedral molecular geometry, tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall chemical formula of Silicon dioxide, SiO2. Quartz is the second most abundant mineral in Earth's continental crust, behind feldspar. Quartz exists in two forms, the normal α-quartz and the high-temperature β-quartz, both of which are chiral. The transformation from α-quartz to β-quartz takes place abruptly at . Since the transformation is accompanied by a significant change in volume, it can easily induce microfracturing of ceramics or rocks passing through this temperature threshold. There are many different varieties of quartz, several of which are classified as gemstones. Since antiquity, varieties of quartz have been the most commonly used minerals in the making of Jewellery, jewelry and hardstone carvings, espe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
